(19)

(11)

EP 2 637 789 A2

(12)

(88) Date of publication A3: 02.08.2012 (43) Date of publication: 18.09.2013 Bulletin 2013/38 (21) Application number: 11796763.8 (22) Date of filing: 08.11.2011

(51) International Patent Classification (IPC):  B01L 7/00(2006.01) (86) International application number: PCT/GB2011/001565 (87) International publication number: WO 2012/063011 (18.05.2012 Gazette 2012/20)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 14.01.2011 GB 201100625 08.11.2010 GB 201018794 (71) Applicant: BG Research Ltd Cambridgeshire PE28 0NJ (GB)	(72) Inventors: NAZARETH, Nelson Upper Dean Cambridgeshire PE28 0ND (GB) DRISCOLL, Antony Langford Bedfordshire SG18 9PQ (GB) EDGE, David Surrey CR6 9RP (GB)